MSM SoC HSUSB controllers OTG: Required properties : - compatible : should be "qcom,hsusb-otg" - regs : Array of offset and length of the register sets in the memory map - reg-names : indicates various iomem resources passed by name. The possible strings in this field are: "core": USB controller register space. (Required) "tcsr": TCSR register for routing USB Controller signals to either picoPHY0 or picoPHY1. (Optional) "phy_csr": PHY Wrapper CSR register space. Provides register level interface through AHB2PHY for performing PHY related operations like retention and HV interrupts management. - interrupts: IRQ line - interrupt-names: OTG interrupt name(s) referenced in interrupts above HSUSB OTG expects "core_irq" which is IRQ line from CORE and "async_irq" from HSPHY for asynchronous wakeup events in LPM. optional ones are described in next section. - qcom,hsusb-otg-phy-type: PHY type can be one of 1 - Chipidea PHY (obsolete) 2 - Synopsis Pico PHY 3 - Synopsis Femto PHY 4 - QUSB ULPI PHY - qcom,hsusb-otg-mode: Operational mode. Can be one of 1 - Peripheral only mode 2 - Host only mode 3 - OTG mode Based on the mode, OTG driver registers platform devices for gadget and host. - qcom,hsusb-otg-otg-control: OTG control (VBUS and ID notifications) can be one of 1 - PHY control 2 - PMIC control 3 - User control (via debugfs) - -supply: handle to the regulator device tree node Required "supply-name" is "HSUSB_VDDCX" (when voting for VDDCX) or "hsusb_vdd_dig" (when voting for VDDCX Corner voltage), "HSUSB_1p8-supply" and "HSUSB_3p3-supply". - qcom,vdd-voltage-level: This property must be a list of three integer values (no, min, max) where each value represents either a voltage in microvolts or a value corresponding to voltage corner. - clocks: a list of phandles to the USB clocks. Usage is as per Documentation/devicetree/bindings/clock/clock-bindings.txt - clock-names: Names of the clocks in 1-1 correspondence with the "clocks" property. Required clocks: "core_clk": USB core clock that is required for data transfers. "iface_clk": USB core clock that is required for register access. Optional clocks: "sleep_clk": PHY sleep clock. Required for interrupts. "phy_reset_clk": PHY blocks asynchronous reset clock. Required for the USB block reset. It is a reset only clock. "phy_por_clk": Reset only clock for asserting/de-asserting PHY POR signal. Required for overriding PHY parameters. "phy_csr_clk": Required for accessing PHY CSR registers through AHB2PHY interface. "phy_ref_clk": Required when PHY have referance clock, "xo": XO clock. The source clock that is used as a reference clock to the PHY. "bimc_clk", "snoc_clk", "pcnoc_clk": bus voting clocks. Used to keep buses at a nominal frequency during USB peripheral mode for achieving max throughput. - qcom,max-nominal-sysclk-rate: Indicates maximum nominal frequency for which system clock should be voted whenever streaming mode is enabled. Optional properties : - interrupt-names : Optional interrupt resource entries are: "pmic_id_irq" : Interrupt from PMIC for external ID pin notification. "phy_irq" : Interrupt from PHY. Used for ID detection. - qcom,hsusb-otg-disable-reset: If present then core is RESET only during init, otherwise core is RESET for every cable disconnect as well - qcom,hsusb-otg-pnoc-errata-fix: If present then workaround for PNOC performance issue is applied which requires changing the mem-type attribute via VMIDMT. - qcom,hsusb-otg-default-mode: The default USB mode after boot-up. Applicable only when OTG is controlled by user. Can be one of 0 - None. Low power mode 1 - Peripheral 2 - Host - qcom,hsusb-otg-phy-init-seq: PHY configuration sequence. val, reg pairs terminate with -1 - qcom,hsusb-otg-power-budget: VBUS power budget in mA 0 will be treated as 500mA - qcom,hsusb-otg-pclk-src-name: The source of pclk - Refer to "Documentation/devicetree/bindings/arm/msm/msm-bus.txt" for below optional properties: - qcom,msm-bus,name - qcom,msm-bus,num_cases - There are three valid cases for this: NONE, MAX and MIN bandwidth votes. Minimum two cases must be defined for both NONE and MAX votes. If MIN vote is different from NONE VOTE then specify third case for MIN VOTE. If explicit NOC clock rates are not specified then MAX value should be large enough to get desired BUS frequencies. In case explicit NOC clock rates are specified, peripheral mode bus bandwidth vote should be defined to vote for arbitrated bandwidth so that 60MHz frequency is met. - qcom,msm-bus,num_paths - qcom,msm-bus,vectors - qcom,hsusb-otg-lpm-on-dev-suspend: If present then USB enter to low power mode upon receiving bus suspend. - qcom,hsusb-otg-clk-always-on-workaround: If present then USB core clocks remain active upon receiving bus suspend and USB cable is connected. Used for allowing USB to respond for remote wakup. - qcom,hsusb-otg-delay-lpm: If present then USB core will wait one second after disconnect before entering low power mode. - -supply: handle to the regulator device tree node. Optional "supply-name" is "vbus_otg" to supply vbus in host mode. - qcom,dp-manual-pullup: If present, vbus is not routed to USB controller/phy and controller driver therefore enables pull-up explicitly before starting controller using usbcmd run/stop bit. - qcom,usb2-enable-hsphy2: If present then USB2 controller is connected to 2nd HSPHY. - qcom,hsusb-log2-itc: value of 2^(log2_itc-1) will be used as the interrupt threshold (ITC), when log2_itc is between 1 to 7. - qcom,hsusb-l1-supported: If present, the device supports l1 (Link power management). - qcom,no-selective-suspend: If present selective suspend is disabled on hub ports. - qcom,hsusb-otg-mpm-dpsehv-int: If present, indicates mpm interrupt to be configured for detection of dp line transition during VDD minimization. - qcom,hsusb-otg-mpm-dmsehv-int: If present, indicates mpm interrupt to be configured for detection of dm line transition during VDD minimization. - pinctrl-names : This should be defined if a target uses gpio and pinctrl framework. See "pinctrl" in Documentation/devicetree/bindings/pinctrl/msm-pinctrl.txt. It should specify the names of the configs that pinctrl can install in driver Following are the pinctrl config that can be installed "hsusb_active" : Active configuration of pins, this should specify active config of vddmin gpio (if used) defined in their pin groups. "hsusb_sleep" : Disabled configuration of pins, this should specify sleep config of vddmin gpio (if used) defined in their pin groups. - qcom,hsusb-otg-vddmin-gpio = If present, indicates a gpio that will be used to supply voltage to the D+ line during VDD minimization and peripheral bus suspend. If not exists, then VDD minimization will not be allowed during peripheral bus suspend. - qcom,ahb-async-bridge-bypass: If present, indicates that enable AHB2AHB By Pass mode with device controller for better throughput. With this mode, USB Core runs using PNOC clock and synchronous to it. Hence it is must to have proper "qcom,msm-bus,vectors" to have high bus frequency. User shouldn't try to enable this feature without proper bus voting. When this feature is enabled, it is required to do HW reset during cable disconnect for host mode functionality working and hence need to disable qcom,hsusb-otg-disable-reset. With this feature enabled, USB HW has to vote for maximum PNOC frequency as USB HW cannot tolerate changes in PNOC frequncy which results in USB functionality failure. - qcom,disable-retention-with-vdd-min: If present don't allow phy retention but allow vdd min. - qcom,usbin-vadc: Corresponding vadc device's phandle to read usbin voltage using VADC. This will be used to get value of usb power supply's VOLTAGE_NOW property. - qcom,usbid-gpio: This corresponds to gpio which is used for USB ID detection. - qcom,hub-reset-gpio: This corresponds to gpio which is used for HUB reset. - qcom,sw-sel-gpio: This corresponds to gpio which is used for switch select routing of D+/D- between the USB HUB and type B USB jack for peripheral mode. - qcom,bus-clk-rate: If present, indicates nominal bus frequency to be voted for bimc/snoc/pcnoc clock with usb cable connected. If AHB2AHB bypass is enabled, pcnoc value should be defined to very large number so that PNOC runs at max frequency. If 'qcom,default-mode-svs' is also set then two set of frequencies must be specified for SVS and NOM modes which user can change using sysfs node. - qcom,phy-dvdd-always-on: If present PHY DVDD is supplied by a always-on regulator unlike vddcx/vddmx. PHY can keep D+ pull-up and D+/D- pull-down resistors during peripheral and host bus suspend without any re-work. - qcom,emulation: Indicates that we are running on emulation platform. - qcom,boost-sysclk-with-streaming: If present, enable controller specific streaming feature. Also this flag can bump up usb system clock to max in streaming mode. This flag enables streaming mode for all compositions and is different from streaming-func property defined in android device node. Please refer Doumentation/ devicetree/bindings/usb/android-dev.txt for details about "streaming-func" property. - qcom,axi-prefetch-enable: If present, AXI64 interface will be used for transferring data to/from DDR by controller. - qcom,enable-sdp-typec-current-limit: Indicates whether type-c current for SDP CHARGER to be limited. - qcom,enable-phy-id-pullup: If present, PHY can keep D+ pull-up resistor on USB ID line during cable disconnect. - qcom,max-svs-sysclk-rate: Indicates system clock frequency voted by driver in non-perf mode. In perf mode driver uses qcom,max-nominal-sysclk-rate. - qcom,pm-qos-latency: This represents max tolerable CPU latency in microsecs, which is used as a vote by driver to get max performance in perf mode. - qcom,default-mode-svs: Indicates USB system clock should run at SVS frequency. User can bump it up using 'perf_mode' sysfs attribute for gadget. Example HSUSB OTG controller device node : usb@f9690000 { compatible = "qcom,hsusb-otg"; reg = <0xf9690000 0x400>; reg-names = "core"; interrupts = <134>; interrupt-names = "core_irq"; qcom,hsusb-otg-phy-type = <2>; qcom,hsusb-otg-mode = <1>; qcom,hsusb-otg-otg-control = <1>; qcom,hsusb-otg-disable-reset; qcom,hsusb-otg-pnoc-errata-fix; qcom,hsusb-otg-default-mode = <2>; qcom,hsusb-otg-phy-init-seq = <0x01 0x90 0xffffffff>; qcom,hsusb-otg-power-budget = <500>; qcom,hsusb-otg-pclk-src-name = "dfab_usb_clk"; qcom,hsusb-otg-lpm-on-dev-suspend; qcom,hsusb-otg-clk-always-on-workaround; hsusb_vdd_dig-supply = <&pm8226_s1_corner>; HSUSB_1p8-supply = <&pm8226_l10>; HSUSB_3p3-supply = <&pm8226_l20>; qcom,vdd-voltage-level = <1 5 7>; qcom,dp-manual-pullup; qcom,hsusb-otg-mpm-dpsehv-int = <49>; qcom,hsusb-otg-mpm-dmsehv-int = <58>; qcom,max-nominal-sysclk-rate = <133330000>; qcom,max-svs-sysclk-rate = <100000000>; qcom,pm-qos-latency = <59>; qcom,msm-bus,name = "usb2"; qcom,msm-bus,num_cases = <2>; qcom,msm-bus,num_paths = <1>; qcom,msm-bus,vectors = <87 512 0 0>, <87 512 60000000 960000000>; pinctrl-names = "hsusb_active","hsusb_sleep"; pinctrl-0 = <&vddmin_act>; pinctrl-0 = <&vddmin_sus>; qcom,hsusb-otg-vddmin-gpio = <&pm8019_mpps 6 0>; qcom,disable-retention-with-vdd-min; qcom,usbin-vadc = <&pm8226_vadc>; qcom,usbid-gpio = <&msm_gpio 110 0>; }; MSM HSUSB EHCI controller Required properties : - compatible : should be "qcom,ehci-host" - reg : offset and length of the register set in the memory map - interrupts: IRQ lines used by this controller - interrupt-names : Required interrupt resource entries are: HSUSB EHCI expects "core_irq" and optionally "async_irq". - -supply: handle to the regulator device tree node Required "supply-name" is either "hsusb_vdd_dig" or "HSUSB_VDDCX" "HSUSB_1p8-supply" "HSUSB_3p3-supply". - qcom,usb2-power-budget: maximum vbus power (in mA) that can be provided. - qcom,vdd-voltage-level: This property must be a list of five integer values (no, 0.5vsuspend, 0.75suspend, min, max) where each value respresents either a voltage in microvolts or a value corresponding to voltage corner. First value represents value to vote when USB is not at all active, second value represents value to vote when target is not connected to dock during low power mode, third value represents vlaue to vote when target is connected to dock and no peripheral connected over dock during low power mode, fourth value represents minimum value to vote when USB is operational, fifth item represents maximum value to vote for USB is operational. Optional properties : - qcom,usb2-enable-hsphy2: If present, select second PHY for USB operation. - pinctrl-names : This should be defined if a target uses pinctrl framework. See "pinctrl" in Documentation/devicetree/bindings/pinctrl/msm-pinctrl.txt. It should specify the names of the configs that pinctrl can install in driver Following are the pinctrl configs that can be installed "ehci_active" : Active configuration of pins, this should specify active config defined in pin groups of used gpio's from resume and ext-hub-reset. "ehci_sleep" : Disabled configuration of pins, this should specify sleep config defined in pin groups of used gpio's from resume and ext-hub-reset. - qcom,resume-gpio: if present then peripheral connected to usb controller cannot wakeup from XO shutdown using in-band usb bus resume. Use resume gpio to wakeup peripheral. - qcom,ext-hub-reset-gpio: If present then an external HUB is connected to the USB host controller and its RESET_N signal is connected to this ext-hub-reset-gpio GPIO. It should be driven LOW to RESET the HUB. - qcom,usb2-enable-uicc: If present, usb2 port will be used for uicc card connection. - usb-phy: phandle for the PHY device, if described as a separate device tree node - qcom,pm-qos-latency: This property represents the maximum tolerable CPU latency in microsecs, which is used as a vote to keep the CPUs in a high enough power state when USB bus is in use (not suspended). - Refer to "Documentation/devicetree/bindings/arm/msm/msm-bus.txt" for below optional properties: - qcom,msm-bus,name - qcom,msm-bus,num_cases - Two cases (NONE and MAX) for voting are supported. - qcom,msm-bus,num_paths - qcom,msm-bus,vectors Example MSM HSUSB EHCI controller device node : ehci: qcom,ehci-host@f9a55000 { compatible = "qcom,ehci-host"; reg = <0xf9a55000 0x400>; interrupts = <0 134 0>, <0 140 0>; interrupt-names = "core_irq", "async_irq"; /* If pinctrl is used and ext-hub-reset and resume gpio's are present*/ pinctrl-names = "ehci_active","ehci_sleep"; pinctrl-0 = <&ehci_reset_act &resume_act>; pinctrl-1 = <&ehci_reset_sus &resume_sus>; qcom,resume-gpio = <&msm_gpio 80 0>; qcom,ext-hub-reset-gpio = <&msm_gpio 0 0>; hsusb_vdd_dig-supply = <&pm8841_s2_corner>; HSUSB_1p8-supply = <&pm8941_l6>; HSUSB_3p3-supply = <&pm8941_l24>; qcom,usb2-enable-hsphy2; qcom,usb2-power-budget = <500>; qcom,vdd-voltage-level = <1 2 3 5 7>; qcom,usb2-enable-uicc; };